Type-bar bearing.



PATENTED OUT. 6, 1903,

I. HIE-B8,, v TYPE-EAR BEARING. APPLICATION FILED 11211.13. 1903.

IKE

10 HODBL.

m VENTOH WI TNESSES ATTOHNE r5 V UNITED; STATES Tatented October 6, 1903PATENT OFFIcs.

LOUIS MYERS, OF HARTFORD, CONNECTICUT, ASSIGNOR TO UNDERWOOD TYPEWRITERCOMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

TYPE-BAR BEARING.

SPECIFICATION forming part of Letters Patent No. 740,682, dated October6, 1903.

Application filed April 1a, 1903.

To all whom it may concern.-

Be it known that I, LOUIS MYERS, a citizen of the United States, and aresident of the city of Hartford, county of Hartford; and State ofConnecticut, have invented certain new and useful Improvements inType-Bar Bearings,

of which the following is a'specification.

My invention relates to ball-bearings applicable particularly to thetype-bars of typewriters and other machines, and has for its object toprovide simple and reliable means for securing an easy motion of thetype-bar or other swinging part. To secure this result, I employ aball-bearing of a novel construction, which I will now proceed todescribe with reference to the accompanying drawings.

Figure l is an elevation of that portion of a type-writer to which myinvention, is applied. Fig. 2 is a plan of the pivot portion of thetype-bar and its support drawn upon an enlarged scale. Fig. 3 is asectional ele-f vation on lines 3 3 of Figs. 1 and 4. Fig. 4. is asectional elevation on line 4 4 of Fig. Fig. 5 is an inside view of thebracket or support member E, which appears at the left in igs. 3 and 6'.Fig. 6 shows a slightly differ ent construction in section'on line 6 6of Fig. 7, and Fig. 7 is a cross-section on line 7 7 of Fig. 6.

A indicates the segment or support which forms part of the type writerframe andto which the type-bars Bare pivoted in the manner set forthhereinafter.

C is the cushion on which the free ends of the type-bars rest in theirnormal position.

To the segment A,- I secure, as by means of screws D, a bracket orsupport for each typebar, each support consisting, preferably, of twoL-shaped sections E, the cross members of which overlap and are engagedby the screws D. The longitudinal member of one section has a depressionadapted to receive the head F of a screw F. This member is fiat upo'nitsinner surface. The longitudinal member of the other section has aninwardlybent portion E, forming a cone or cup, on its inner surface anda recess E in its outer surface, the recess being adapted to contain anut G, screwed on the end of the screw F.

'screw. connecting it with any sultable mechanism Serial no. 152.317.(No model.)

The latter extends through a central opening in the portion E and alsolooselyvthrough an opening in the pivot portion of the type-bar B, sothat the latter may turn freely on the The type-bar has a projection Bfor (of which thelink H may form part) for swinging the type-bar to theprinting position. 'The pivot portion of the type-bar is arrangedbetween the parallel members of the support E. -So far both forms of myinvention shown in the drawings are of the same construction.

As illustrated by Figs. 3 and 4, the pivot portion of-the type-bar is ofthe same thickness throughout and is by therpressure of a stamp or diebent so as to form three oblique members B? B B and a flat centralmemberB apertured for the passage of the screw F. The central member isadapted to almost engage theiuwardly-bent portion E of the support E,while the ridge formed where the ob lique members B B meet extends veryclose to the body of the support adjacent to the said portion E. Theother member of the support is arranged to extend very close to the bodyof the type-bar, at the pivot portion thereof, and also to the ridgeformed where the oblique members B and B meet. By the construetiondescribed two annular grooves, preferably V-shaped, are formed inopposite sides of the pivot portion of the type-bar.

These grooves are of different diameters and lie partly in the sametransverse plane, (with reference to the axis formed by the screw Eachof said grooves receives bearing-balls J, of which I have shownthree ina set, these balls being kept apart at a proper distance by rings K,loosely arranged in said grooves.

- Each ball preferably has a three-point bearing, as shown, two againstthe, inclined walls of the V-shaped slot and one against the flat innersurface of the support. I

In Figs. 6 and 7 the pivot portion of the type-bar is not of uniformthickness, and the grooves which are to receive the balls are producednot by bending the material, but by cutting awaya portion of thematerial. Simillar letters have been applied in Fig. 6 to those employedin Fig. 3, and it will be understood that in operation the twoconstructions are exactly alike, the difference being entirely in themode of manufacture. The construction shown in Fig. '5 may be morenearly dust-proof than the one shown in Fig. 3; but the latter isprobably easier and cheaper to manufacture.

In the appended claims I have referred specifically to a type-bar; but Idesire it to be understood that my invention may be applied to anypivoted part'of a type-writer or other machine, and the claims are to beinterpreted accordingly.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a type-Writer or other machine, the combination with a supporthaving spaced members, of a type-bar, the pivot portion of which extendsbetween said members, a connecting device extending from one member tothe other, and also extending loosely through the type-bar, the saidpivot portion being provided on its opposite faces with annular groovesof different diameters,and balls arranged in said grooves in engagementwith the members of the support.

2. In a type-writer or other machine, a support having two spacedmembers, one of which has an inward projection, a type-bar the pivotportion of which is located between said members, aconnecting deviceextending from one member to the other at the inward projection thereofand also extending through the'pivot portion of the type-bar, the saidpivot portion being provided on its opposite faces with annular groovesof diiferent diameters, and balls arranged in said grooves and inengagement with the members of the support.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

LOUIS MYERS.

Witnesses:

JOHN LOTKA, EUGENE EBLE.

